diff options
| author | James Ketrenos <jketreno@linux.intel.com> | 2005-09-21 11:56:27 -0500 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@pobox.com> | 2005-09-21 23:03:54 -0400 |
| commit | 2c0aa2a5c2dfa1293ae3a07517d0b7de149358a1 (patch) | |
| tree | a9f949b6dc6a5e68086c06dfeb459a14608227a3 | |
| parent | 1264fc0498e1e20f97b1ab690e523e7a7fc50eab (diff) | |
[PATCH] ieee80211: Return NETDEV_TX_BUSY when QoS buffer full
tree ba6509c7cd1dd4244a2f285f2da5d632e7ffbb25
parent 7b5f9f2ddcabdaea214527a895e6e8445cafdd80
author James Ketrenos <jketreno@linux.intel.com> 1124447000 -0500
committer James Ketrenos <jketreno@linux.intel.com> 1127313383 -0500
Per the conversations with folks at OLS, the QoS layer in 802.11
drivers can now result in NETDEV_TX_BUSY being returned when the queue
a packet is targetted for is full.
To implement this, ieee80211_xmit will now call the driver's
is_queue_full to determine if the current priority queue is full. If
so, NETDEV_TX_BUSY is returned to the kernel and no processing is done
on the frame.
Signed-off-by: James Ketrenos <jketreno@linux.intel.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
| -rw-r--r-- | net/ieee80211/ieee80211_tx.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/net/ieee80211/ieee80211_tx.c b/net/ieee80211/ieee80211_tx.c index 23a1f88de7c..e9efdd42ba3 100644 --- a/net/ieee80211/ieee80211_tx.c +++ b/net/ieee80211/ieee80211_tx.c @@ -236,8 +236,12 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev) }; u8 dest[ETH_ALEN], src[ETH_ALEN]; struct ieee80211_crypt_data *crypt; + int priority = skb->priority; int snapped = 0; + if (ieee->is_queue_full && (*ieee->is_queue_full) (dev, priority)) + return NETDEV_TX_BUSY; + spin_lock_irqsave(&ieee->lock, flags); /* If there is no driver handler to take the TXB, dont' bother @@ -467,6 +471,14 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev) stats->tx_bytes += txb->payload_size; return 0; } + + if (ret == NETDEV_TX_BUSY) { + printk(KERN_ERR "%s: NETDEV_TX_BUSY returned; " + "driver should report queue full via " + "ieee_device->is_queue_full.\n", + ieee->dev->name); + } + ieee80211_txb_free(txb); } |